Dyestuff solutions of copper phthalocyanine derivatives for paper dyeing

Dyestuff solutions of CuPc-(3)(SO3(-)M(+))m in which CuPc denotes copper phthalocyanine, m denotes a number from 1.8 to 2.5 and M(+) denotes a mixture of An(+) and an amine of the formula in which n represents a number 0.8 to 1.5, An(+) represents an alkali metal ion or NH4 ion, R1 and R2 represent...

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